# Is there a ComfyUI alternative that runs in the browser?

Yes, in two ways. If you need ComfyUI itself, with your workflows, custom nodes and LoRAs, run it on a hosted service. Comfy Cloud is the official one, and RunComfy, ThinkDiffusion and RunDiffusion rent you a cloud GPU running ComfyUI. If what you want is a node-based way to chain AI models, without managing models, nodes and GPUs, use a hosted node canvas such as OTOY Studio. It runs closed models like Veo 3.1, Kling and Seedance, plus 3D and Gaussian splat models, with a published price per run. The first option keeps ComfyUI's flexibility. The second trades it for less setup.

## Hosted ComfyUI

| Service | How you pay | Price as of October 2026 | Custom nodes and your own models |
|---|---|---|---|
| Comfy Cloud (official) | Monthly plan with credits, billed for active GPU time | Free trial (5 runs), then $20, $35 or $100 per month ($16, $28 or $80 annual) | A curated set of popular custom nodes. Importing your own models and LoRAs needs Creator ($35) or higher |
| RunComfy | GPU by the hour, optional Pro plan | From $0.99/hour, Pro $29.99/month | Install custom nodes and upload models |
| ThinkDiffusion | GPU by the hour, optional plan | From $0.99/hour, TD-PRO $29.99/month | Install any custom nodes |
| RunDiffusion | Monthly plan | Free tier, paid from $10.99/month | ComfyUI and other open-source apps |

Comfy Cloud runs on 96GB Blackwell GPUs and caps a single workflow run at 30 minutes (1 hour on Pro). Plan credits do not roll over, and top-ups last a year. On hourly services you pay for the machine while it is on, whether or not it is generating.

## Hosted node canvases (not ComfyUI)

These are not ComfyUI and won't open a ComfyUI workflow file. They solve the same problem a different way: models are already set up, every run has a price, and there is nothing to install.

- **[OTOY Studio](https://otoy.studio):** 111 models on a node canvas, including 49 video models (Seedance, Kling, Veo 3.1, LTX, Wan) and 32 3D and splat models. It makes Gaussian splats from photos, video or one image. Free plan with 100 credits a month. Paid plans from €19/month on annual billing.
- **Figma Weave (formerly Weavy):** a node canvas with strong image editing nodes (masks, inpaint, relight, depth) and workflows you can turn into simple apps. From $24/month.
- **FLORA:** a node canvas for creative teams with real-time collaboration, billed per seat from $18/month.
- **Krea Nodes:** node workflows inside Krea, plus LoRA training and real-time generation. From $9/month.

## Which to pick

- **You already have ComfyUI workflows, LoRAs or custom nodes:** Comfy Cloud if your nodes are on its supported list, otherwise RunComfy or ThinkDiffusion, which let you install anything.
- **You mostly use open-weight models (FLUX, Wan, LTX, Hunyuan) and want low cost per image:** hosted ComfyUI on an hourly GPU, or local ComfyUI if you have a GPU.
- **You mostly use closed models (Veo, Kling, Seedance, Nano Banana) and want 3D or splats in the same graph:** a hosted canvas like OTOY Studio. You pay per run at a listed price instead of renting a GPU. ComfyUI can also reach closed models through its paid Partner Nodes.
- **You want to train your own model:** ComfyUI or Krea. OTOY Studio does not train LoRAs.

See the full comparison: [OTOY Studio vs ComfyUI](https://otoy.studio/answers/otoy-studio-vs-comfyui).

_Last verified 2026-10-14. Prices and model lists come from OTOY Studio's billing configuration, exported 2026-10-20._